Planodrapil co



J. W. ORROCK.

SMOKE JACK.

APPLICATION FILED APR.24. I919.

Patented Aug. 26, 1919.

2 SHEETS-SHET I.

sitar PATENT OFFICE.

JOHN W. ORROCK, OF MONTREAL, QUEBEC, CANADA, ASSIGNOR TO JOHN MORRILL ROG-ER FAIRBAIRN, OF WESTMOUNT, QUEBEC, CANADA, FOR HIMSELF, AND IN TRUST FOR ROBERT W. McKILLOP, 0F MONTREAL, CANADA, AND SAID ORROCK.

SMOKE-JACK.

Application filed April 24,

To all whom it may concern:

Be it known that 1, JOHN W. ORROOK, a subject of the King of Great Britain, and resident of the city of Montreal, Province of Quebec, Dominion of Canada, have invented certain new and useful Improvements in Smoke-Jacks; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to smoke jacks, and more particularly the smoke jack disclosed in my United States Patent No. 1,151,878 dated August 24, 1915 wherein is illus trated a Wood mill-type smoke jack of laminated structure.

The present invention has for its object to increase the sphere of usefulness of this type of jack by constructing the same in knockdown form and at the same time providing in it means for carrying off smoke which has heretofore been pocketed within the roundhouse in the angles between the roof and the jack.

To this end the invention may be said briefly to consist of a wood mill-type smoke jack of knock-down form the members of which are reinforced to facilitate handling during shipment and while being assembled from knockdown state. Another feature consists of a particular construction of the laminae of the members whereby vent holes are provided leading into the jack from the spaces surrounding the latter and immediately beneath the roof of the roundhousc. The jack consists essentially, similarly to the jack patented by me as above mentioned, of a straight flue of square cross section with a hood forming its lower end and expanded in the direction of the railroad track, the flue projecting upwardly through the roof. This jack, according to my invention, is secured in position by having its flue projecting upwardly through the roof,'as just mentioned, and a collaris rigidly secured to this flue imposition to bear upon the top of the roof and support the jack, and although I describe hereinafter certain trimmers and beams securing the flue and hood at the underside of the roof, yet these last mentioned structural members are Specification of Letters Patent.

Patented Aug. 26, 1919.

of the same length and so assembled that the upper ends of one pair project above the other pair and the lower ends of this other pair project below the first mentioned pair, and the hood consists of two vertical and two oblique members. The upper ends of the vertical side members being straight and equal in width to the members of the flue and forming a continuation of two of the sides thereof, and lower ends of these side members of the hood.are expanded. The other sides of the hood are oblique members forming the tops of the expanded portion of the hood. These members from which the complete jack is formed are adapted to be shipped in a knocked-down state from a central point of fabrication to any place along the line and there assembled. If desired they may be assembled in flue and hood sections for shipment, the particular construction and arrangement of the members permitting of this. The invention also consists of the specific construction and particular arrangement of parts of my improved jack as hereinafter described and pointed out in the claims.

For full comprehension, however, of my invention, reference must be had to the accompanying drawings in which similar reference characters indicate the same parts, and wherein: I

Figure 1 is an isometric view of my improved jack with the roof of the roundhouse omitted and parts of the jack broken away for purposes of illustration;

Fig. 2 is a longitudinal vertical sectional view of the jack taken on line 2-2 Fig. 3; Fig. 3 is a plan view of the jack;

Fig. 4 is a transverse vertical sectional view taken on line 4-1 Fig. 2;

Fig. 5 is a plan view of one of the side pieces of the jack, two of which are required;

Fig. 6 is a plan View of the other side, two of which are required;

Fig. 7 is a plan view'of the side of the hood corresponding to the side illustrated in Fig. 6, two of which are required Fig. 8 is a plan view of one of the two top pieces of the hood; I r

Fig. 9 isan edge. view thereof;

.Fig. 10 is a plan view of the cap of the Fig. 11 is a plan view of a damper for the jack; n Fig. 12is a detail view of the angle of theflueof the jack with its hood, and illustrating particularly thevent holes; and

Fig. 13 is a detail view illustrating the manner in which I cut the pieces for the corners of the hood. I v

The flue section of my improved jack'is indicated at B and issupported in an opening Ofin the roof of the round house with its lower end projecting'a short distance below the roof as at B while the hood section'is expanded in the direction'of the track 7 as' at D; the'flue portion having a damper E (Fig'. 11') pivoted therein. The pivotof the damper is o-fi-centered and a rope G for operating it is connected to its short end in order that by pulling the rope the damper 1 maybe closed an'dwill open by gravity when released.

' The jack is supported by means of a pair oftrimmersl-Lsupported in turn by metal hangersI of angular formv secured to the ends thereof, "and to'cross beams J, a collar 7 K being nailed to the jack around thesame in the' angle between it andthe outside surface of the roof, this collar and the adjacent portion of the'roof' beingcovered by a galrow flat" pieces or laminae nailed together sideby side, the alternate pieces having their lower endscut off obliquely to presentvent vani zediron fiashing M. Y

The flue consists of a pair of side members N (Fig. 5):;m'ade up of aseries of long narholesQ; In order to reinforce these members the top edges having transverse strips .R, nailed to them. These side members ex- 7 tend from the lower end of the flue portion to it's top. I s

v The other sides of-theflue consists of oblong members S (Fig. 6) andthe upper ends '1 ofthe members'U forming'the straight sides tothe hood, these sides S being so assembled with the sides N that the ends of the latter project above and below the sides S.

*These membersS'are also constructed of a series of long'narrow flat pieces or laminae nailed together side by side reinforced by end strips V and V The oblique pieces W for thetop of the hood are comparatively short and oblong in plan view, each made up of similar strips or laminae as used for the other pieces of the jack Y "and arranged longitudinally with transverse strips at their ends, and

the strips, both longitudinal and transverse, are nailed securely together. The transverse strips VV and V are cut to match as'shown in enlarged detail in Fig. 12.

In order to facilitate assembling these members, a number of corner piecesXof rectangular-triangular form, are supplied to complete the corners of the hood. These corner pieces are illustrated in detail in Figs.

' Band 18 and form the end marginal strips bf the side of the flue. I

The members are secured together'at their edges by wood screw 0, the heads of which are countersunk and covered with plastic cement. 7 V The cap of the jack conslsts :of a single 'member Y made up like the other members of the jack of a number ,of long narrow strips or laminae nailed individually'side by side and reinforced by transverse end pieces .Z, these transverse pieces Z having a pair of screw holes 5 near each and. through which the cap is secured to theupper; ends of the 1 The jack, itwill beobserved, is of a knock down nature without frames, cleats or bracing, andpresents practically, smooth walls both inside and out,-wh1chprov1de nnnimum projections for the collection of soot and other depositsof smoke fumes. 'lli'e members being individually constructedof strips oftimber or laminae nailed together are very strong and capable of withstanding considerable handling, and consequently) are well adapted for shipment and assembling. Another important featureis the ventilating property presented by the vent holes Q' whereby the smoke which may escape the hood is" sucked into the jackfrom the space surrounding the portion of the latter eX- tending below the roof. By referring'to I F g. 12 it will be. seen that these vcnt holes slope to the same angle as the hood, and thus nduce .an up-draft and prevent downdraft; The jack should be assembled in the shop before the members are shipped to insure a correct fit. After the shop work is completed each member should be submerged in and soaked with a fire resisting V paint in order that it may be thoroughly permeated with the paint; or if preferred each piece or stick may be dipped before the members are fabricated, and allowed to drip and dry before the members are made up. If desired the flue and hood sections may e in idually pe maeen ves embled or 7 tangular cross-sectionand a hood at the shipment and erection at their destination, the interlocking of the upper ends T of the side members of the hood with the downwardly projecting ends of the members N facilitating the erection.

Although I have described and illustrated my invention applied to engine housings, yet if desired it may be ap lied to any building requiring a smoke stach. v

lVhat I claim is as follows:

,1. The combination withthe roof of a building, such roof having an opening; of a knock-down smoke-jack, comprising members fashioned to present two pairs of opposite sides forming a straight flue of reclower end of the said flue and consisting of members fashioned to present a pair of vertical downwardlyexpanded sides and two oblique sides forming the tops of the said expanded portion, means securing the jack to the roof with the flue projecting through the opening in the latter; and the said smoke-jack having vent holes effecting communication between the interior of the flue and the space beneath and in the vicinity of the roof.

2. The combination with the roof of a building, such roof havingan opening; of a knock-clown smoke-j ack comprising members fashioned to present two pairs of opposite sides forming a straight flue of rectangular cross-section, allthe sides of which are of equal length, one pair being disposed to proj ect above the other two and the lower ends of the said other sides projecting below the first mentioned pair; a hood at the lower end of the said flue and consisting of members fashioned to present a pair of vertical downwardly expanded sides with diminished straight. upper ends adapted to fit between the downwardly projecting sides of the flue, means securing the jack to the roof with the flue'projecting through the opening in the latter; and the jack having vent holes effecting communication between the space beneath and in the vicinity of the roof. 3. The combination with the roof of a building, such roof having an opening therein; of a knockidown smoke jack comprising members fashioned to present two pairs of opposite sides forming a straight flue of rectangular cross-section; a hood at the lower end of the flue and consisting of members fashioned to present a pair of vertical downwardly expanded sides and two oblique sides forming the tops of the said expanded portion of the hood; means securing theja-ck to the top of the roof with the flue project ing through the opening in the latter; each of the saidmembers consisting of long narrow strips fastened together sidewise and two of the opposite sides ofthe flue having the lower ends of their alternate strips shortened to provide vent holes efiecting communication between the space beneath and in the vicinity of the roof and the interior of the flue.

4. The combination with the roof of a building such roof having an opening therein; of a knock-down smoke-jack comprising members fashioned to present two pairs of opposite sides forming a straight flue of a rectangular cross-section; a hood at the lower end of the said flue and consisting of members fashioned to present a pair of vertical downwardly expanded sides and two oblique sides forming the tops of the expanded portion of the hood; means securing the smoke-jack to the roof with the flue projecting through the said opening; said smoke-jack having vent holes effecting communication between the space beneath and in the vicinity of the roof, and said vent holes being oblique and of corresponding angl to the obliquesides of the hood. 1 5. The combination with the roof of a building, such roof having an opening therein; of a knock-down smoke-jack comprising members fashioned to present two pairs of opposite sides forming a straight flue of rectangular' cross-section; a hood at the lower end of 'the said flueand consisting of members fashioned tolpresent a pair of vertical downwardly expanded sides and two oblique sides forming the tops of the said expanded portion of the hood means securing the smoke-jack to the roof with the flue projecting through the said opening; each of the said members consisting of long narrow strips fastened together sidewise, and two of the opposite sides of the flue having the lower ends of their alternate strips short ened to provide vent holes effecting cominunication between the space beneath and in the vicinity of the roof and the interior of the flue, said vent holes being oblique and of corresponding angle to the oblique sides of the hood.

' 6. The combination with the roof of a building; such roof having an opening therein; of a knock-clown smoke-jack comprising membersfashioned to present two pairs of opposite sides forming a straight flue of rectangular cross-section, all of the sides of which are of equal length, one pair being disposed to project above the other two, and the lower ends of the other sides projecting below the first mentioned pair; a hood at the lower end of the said flue and consisting of members fashioned to present a fittir of vertical downwardly expanded sides with diminished straight upper ends adapt ed to fit between the downwardly projecting sidesof the flue, means securing the smoke-jack to the roof with the flue projecting through the said opening, said flue having vent holes effecting communication "9. Thecombination with the roof of Pa two sides and'the; lower ends ofothe said other i-sidesf projecting below the first mentioned pair; ahood at the lower endof' the said flue-and consisting of members fash- Vioned to present a pair of vertical downwardly expanded, sides with diminished' straight upperends adapted to fittbetween' the downwardly projecting sides of the flue; means. securing the" smoke -jack to ,theroof with the flue projecting through the said opening; each ofthe said members consisting of long narrow strips fastenedtogether space beneathand in the vicinity of the roof sidewise and the sides of the flue of greater length having the lower endsof their alternate stripsshortened to provide thevent holes effecting communication between-the and the interior of the flue.

8. The combination with the roof of a building, said-roof having 7 an opening therein; of a knock-down smoke-jack com prising members fashioned to present two pairs of opposite sides forminga straight fine of rectangular cross-section, all of the 1 V sides'ofwhich are of equal length, one-pair being disposed to project above theother'two sides, and the lower ends of the said other sides projecting below the first mentioned pair; a hood at the lower end ofthe said flue and consisting of members. fashioned to present a pair of vertical downwardly expanded sides with diminished straight upper ends adapted to fit between the. down- 'wardly projecting sides of the flue;-means securing the smoke-jack to the roof "with the flue projecting through said open- V ing', 1each of the "said members-consists vent holes 'efl'ecting communication between ing of ,long' narrow strips fastened to-f gether'sidewise and the sides of the flue of greaterf length-having the lower ends of their alternate stripseshortened to: provide the space beneath and in'the vicinity of the roof and vthe interior of'the flue; said veri't holes being oblique "and of corresponding angle to the oblique sides of theiho'od.

building, "sea-id roof having an opening 7 thereinyof. a knockdown smoke-jack, com

prising membersfashioned to presentztwo] pairs of opposite sides forming a straight flu f r an lar c oss-se t nawa ho at h -lower nd of the a d fill 'fli dn ns f mem er sh one to presen a Pa r of vertical downwardly expanded sides and two obliquensidcs forming the tops of the said expanded hood portion; means for securing the smoke-jack tothe roof with the flue projecting through said opening, the said flue having .vent 'holeseffecting communication between the interior of the flue and the space beneath and adjacent'to the roof; the said smoke-jack being disposed with theilower' endof its flue portion pro:

jecting below the roof "and containing a damper located above the, vent holes; and

- means for operating the damper. t,

10. The combination with the roof of a building, said roof having an opening therein;- of aknocksdown[smoke-jack comprising members fashioned to present two pairs of oppositesides forming a straight" flue of rectangularcross=section; a hood at the lower 4 end of the vflue and consisting of members fashioned to present a pairof' vere tical downwardly expandedsides; and two oblique sides forming the tops of the said eXpa-nded hood portionymeans securing the smoke-jack to the roof with the flue pro; jecting through the said opening;th'e sides of the flue. immediately- 'above' the oblique sides having vent holes effecting communicationbetween the interior of the smokejack and the spacebeneath and in the vicinity of the roof the said smoke-jack be ing disposed with the'lower end of its flue projecting belowfthe roof and containing 7 an off-centered pivoted Qdamper located above the vent holes; and a rope for operatingthe damperand connected ationeend to the short: end of the damper and passing through one of the vent holes and hanging down over the end of the hood. I o v 11. A knock-down-fsmoke-jack consisting of separate flue and hood-sections, the flue section having downwardly projecting sides and the hood section having upwardly pro" jecting side portions adapted-to engage be tween the downwardly projecting sides of the flue-section for the purpose set forth. Q12. A knock-down smoke-jack-consisting of separate flue and Thood sections, the flue section having downwardly projecting sides and the hood section having upwardly pro-' jecting side portions adapted to engage be- ;r

tween. the, downwardly projectingsides off the flue-section for the purpose? set forth, each-of the-sides of said sectionsbeingver-M tically laminated;

-"l3pThe-combinationwithrthe roof of buildingighaving an opening; of a laminated smoke-jack.,mounted within said bpening and projecting above and below the roof,

said smoke-jack having, vent 1101650011 tiguous to the roof and in the portion of name to this specification in the presence of 10 the jack below the roof for eflecting com two witnesses.

Inunication between the interior of the flue JOHN W. ORROCK. and the space beneath and in the vicinity of Witnesses: 5 the roof. J. FINOH,

In testimony whereof I have signed my F. W. DUCKETT.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

